York HATC-F024S User manual

OUTDOOR SPLIT-SYSTEM
AIR CONDITIONER
12 SEER 2 TO 5 TONS
035-16399-001 Rev. B (101)
TABLE OF CONTENTS
GENERAL INFORMATION . . . . . . . . . . . . . . . . .2
INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
REFERENCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
LIMITATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
UNIT INSTALLATION . . . . . . . . . . . . . . . . . . . . .3
LOCATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
GROUND INSTALLATION . . . . . . . . . . . . . . . . . . . . . .3
UNIT PLACEMENT . . . . . . . . . . . . . . . . . . . . . . .3
TXV INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . .3
PIPING CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . .4
PRECAUTIONS DURING LINE INSTALLATION . . . . .4
PRECAUTIONS DURING BRAZING OF LINES . . . . . .5
PRECAUTIONS DURING BRAZING ANGLE VALVE . .5
ELECTRICAL CONNECTIONS . . . . . . . . . . . . . .6
GENERAL INFORMATION & GROUNDING . . . . . . . . .6
POWER WIRING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
ACCESSORY WIRING . . . . . . . . . . . . . . . . . . . . . . . . .6
THERMOSTAT MOUNTING / WIRING . . . . . . . . . . . . .6
DE-HUMIDIFICATION CONTROL . . . . . . . . . . . . . . . .7
FIELD CONNECTIONS - CONTROL WIRING . . . . . . .7
INDOOR BLOWER SPEED SETTINGS . . . . . . .7
WIRING DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . .8
SYSTEM START-UP . . . . . . . . . . . . . . . . . . . . . . . . . .10
CHECKING SYSTEM CHARGE . . . . . . . . . . . . . . . . .10
SERVICING AND VERIFY: . . . . . . . . . . . . . . . . . . . . .10
RECORDING TOTAL SYSTEM CHARGE . . . . . . . . .10
SYSTEM FUNCTIONS . . . . . . . . . . . . . . . . . . . .10
COOLING OPERATION . . . . . . . . . . . . . . . . . . . . . . .11
SYSTEM CONTROL BOARD FUNCTIONS . . . . . . . .12
INSTRUCTING THE OWNER . . . . . . . . . . . . . .12
INDICATIONS OF PROPER OPERATION . . . . . . . . .12
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
CAUTION:READ ALL SAFETY GUIDES BEFORE
YOU START TO INSTALL YOUR UNIT.
SAVE THIS MANUAL
INSTALLATION
INSTRUCTION
MODELS: HATC-F024S
HATC-F030S
HATC-F036S
HATC-F048S
HATC-F060S

035-16399-001 Rev. B (101)
2Unitary Products Group
GENERAL INFORMATION
These outdoor condensing units are designed to be installed
with corresponding variable speed air handlers or furnaces,
two stage furnaces and single speed air handlers or furnaces
and a corresponding coil with sweat connect lines. Each unit
is factory charged with refrigerant sufficient for the smallest
indoor evaporator coil plus 15 feet of field supplied vapor and
liquid lines. A balanced port hard shut-off TXV kit must be
used for optimum system performance.
Use this instruction in conjunction with the instruction for the
appropriate indoor evaporator coil, air handler or furnace and
other accessories. Read all instructions before installing the
unit.
INSPECTION
As soon as a unit is received, it should be inspected for possi-
ble damage during transit. If damage is evident, the extent of
the damage should be noted on the carrier's freight bill. A
separate request for inspection by the carrier's agent should
be made in writing. See Form 50.15-NM for more information.
REFERENCE
Installer should pay particular attention to the words NOTE,
CAUTION and WARNING.
NOTES are intended to clarify or make the installation easier.
CAUTIONS identify procedures which, if not followed care-
fully, could result in personal injury, property damage or
equipment damage.
WARNINGS are given to alert the installer that severe per-
sonal injury, death or equipment damage may result if instal-
lation procedures are not followed properly.
LIMITATIONS
The unit should be installed in accordance with all national
and local safety codes and the limitations listed below:
1. Limitations for the indoor unit, coil and appropriate
accessories must also be observed.
2. Optimal performance is gained by using a variable speed
air handler or furnace. Special care must be given when
matched with a single speed blower (furnace or air han-
dler) and a variable frequency drive control or a relay kit
to maintain the proper dehumidification.See section on
dehumidification for details.
3. The outdoor unit must not be installed with any duct work
in the air stream. The outdoor fan is the propeller type
and is not designed to operate against any additional
external static pressure.
4. The unit should not be operated at outdoor temperatures
below 60 °F. The unit is not designed to operate with
a low ambient kit. Do not modify the control system to
operate with any type of low ambient kit.
5. Indoor evaporator coil orifice must be removed prior to
the installation of a factory supplied balanced port TXV
kit.
Incorrect installation may create a condition
where the operation of the product could cause
personal injury or property damage.
This product must be installed in strict compli-
ance with the enclosed installation instructions
and any applicable local, state, and national
codes including, but not limited to, building, elec-
trical, and mechanical codes.

035-16399-001 Rev. B (101)
Unitary Products Group 3
UNIT INSTALLATION
LOCATION
Before starting the installation, select and check the suitability
of the location for both the indoor and outdoor unit. Observe
all limitations and clearance requirements.
A minimum of 18” is required for service at the control panel.
A 10 inch clearance is required for the air inlet to the outdoor
coil. The air discharge of the unit requires a 60 inch clearance
between the top of the unit and any obstucture.
If the unit is to be installed on a black-topped ground area,
the unit should be raised sufficiently above the ground to
avoid taking the accumulated layer of hot air into the outdoor
unit.
Provide an adequate structural support.
GROUND INSTALLATION
The unit may be installed at ground level on a solid base that
will not shift or settle, causing strain on the refrigerant lines
and possible leaks. Maintain the clearances shown in Figure
1 and install the unit in a level position. Isolate the base from
the structure to avoid noise or vibration transmission.
Isolate the unit from rain gutters to avoid any possible wash
out of the foundation.
Normal operating sound levels may be objectionable if the
unit is placed directly under windows of certain rooms (bed
rooms, study, etc.).
UNIT PLACEMENT
1. Provide a base in the pre-determined location.
2. Remove the shipping carton and inspect for possible
damage.
3. Compressor tie-down bolts should remain tightened.
4. Position the unit on the base provided.
5. Make a hole(s) in the structure wall large enough to
accommodate the insulated vapor line, the liquid line and
the wiring.
TXV INSTALLATION
This condensing unit requires the installation of a thermal
expansion valve. The TXV controls the superheat of the
refrigerant at the outlet of the evaporator coil, ensuring the
proper refrigerant temperature at the suction of compressor.
Following are the basic steps for installing the TXV. For detail
instructions, refer to the Installation Instructions accompany-
ing the TXV kit.
Install TXV kit as follows:
1. First, relieve the holding charge by depressing the
Schrader valve located in the end of the liquid line.
2. After holding charge is completely discharged, loosen
and remove the liquid line fitting from the orifice distribu-
tor assembly. Note that the fitting has right hand
threads.
3. Remove the orifice from the distributor body using a
small diameter wire or paper clip. Orifice is not used
when the TXV assembly is installed.
FIGURE 1 : TYPICAL INSTALLATION
MINIMUM 18” SERVICE ACCESS
CLEARANCE ON ONE SIDE
60” OVERHEAD
CLEARANCE
10” CLEARANCE
COIL AREA
WEATHERPROOF
DISCONNECT
SWITCH
THERMOSTAT TO FURNACE OR
AIR HANDLER
TERMINAL BLOCK
NEC CLASS 1 WIRING
NEC CLASS 2 WIRING
TO INDOOR COIL
SEAL OPENING(S) WITH
PERMAGUM OR EQUIVALENT
CONTROL ACCESS PANEL
NOTE: ALL OUTDOOR WIRING MUST
BE WEATHERPROOF.

035-16399-001 Rev. B (101)
4Unitary Products Group
4. After orifice is removed, install the thermal expansion
valve to the orifice distributor assembly with supplied fit-
tings. Hand tighten and turn an additional 1/8 turn to
seal. Do not overtighten fittings.
5. Reinstall the liquid line to the top of the thermal expan-
sion valve. Hand modify the liquid line to align with cas-
ing opening.
6. Install the TXV equalizer line into the vapor line as fol-
lows:
a. Select a location on the vapor line for insertion of the
equalizer line which will not interfere with TXV bulb
placement.
b. Use an awl to punch through the suction tube and
insert the awl to a depth to achieve a 1/8 inch diam-
eter hole.
7. Install TXV equalizer line in 1/8 hole previously made in
vapor line. Equalizer line can be bottomed out in vapor
line as end of equalizer line is cut on 45 degrees angle to
prevent blockage. Braze equalizer line making sure that
tube opening is not brazed closed.
All connections to be brazed are copper-to-copper and
should be brazed with a phosphorous-copper alloy material
such as Silfos-5 or equivalent. DO NOT use soft solder.
Install the TXV bulb to the vapor line near the equalizer line,
using the two bulb clamps furnished with the TXV assembly.
Ensure the bulb is making maximum contact. Refer to TXV
installation instruction for view of bulb location.
1. Bulb should be installed on a horizontal run of the vapor
line if possible. On lines under 7/8" OD the bulb may be
installed on top of the line. With 7/8" OD and over, the
bulb should be installed at the position of about 4 or 8
o'clock.
2. If bulb installation is made on a vertical run, the bulb
should be located at least 16 inches from any bend, and
on the tubing sides opposite the plane of the bend. On
vertical bulb installations, the bulb should be positioned
with the bulb tail at the top, so that the bulb acts as a res-
ervoir.
3. Bulb should be insulated using thermal insulation pro-
vided to protect it from the effect of the surrounding
ambient temperature.
PIPING CONNECTIONS
The outdoor condensing unit may be connected to the indoor
evaporator coil using field supplied refrigerant grade copper
tubing that is internally clean and dry. Units should be
installed only with the tubing sizes for approved system com-
binations as specified in Tabular Data Sheet. The charge
given is applicable for total tubing lengths up to 15 feet. See
Application Data Form 690.01-AD1V for installing tubing of
longer lengths and elevation differences.
NOTE: Using a larger than specified line size could result in
oil return problems. Using too small a line will result
in loss of capacity and other problems caused by
insufficient refrigerant flow. Slope horizontal vapor
lines at least 1" every 20 feet toward the outdoor
unit to facilitate proper oil return.
PRECAUTIONS DURING LINE INSTALLATION
1. Install the lines with as few bends as possible. Care must
be taken not to damage the couplings or kink the tubing.
Use clean hard drawn copper tubing where no apprecia-
ble amount of bending around obstruction is necessary.
If soft copper must be used, care must be taken to avoid
sharp bends which may cause a restriction.
2. The lines should be installed so that they will not obstruct
service access to the coil, air handling system or filter.
3. Care must also be taken to isolate the refrigerant lines to
minimize noise transmission from the equipment to the
structure.
4. The vapor line must be insulated with a minimum of 1/2"
foam rubber insulation (Arm-A-Flex or equivalent). Liquid
lines that will be exposed to direct sunlight and/or high
temperatures must also be insulated.
Tape and suspend the refrigerant lines as shown. DO NOT
allow metal-to metal contact. See Figure 2.
5. Pack fiber glass insulation and a sealing material such
as permagum around refrigerant lines where they pene-
trate a wall to reduce vibration and to retain some flexibil-
ity.
6. See Form 690.01-AD1V for additional piping information.
Dry nitrogen should always be supplied through
the tubing while it is being brazed, because the
temperature required is high enough to cause
oxidation of the copper unless an inert atmo-
sphere is provided. The flow of dry nitrogen
should continue until the joint has cooled. Always
use a pressure regulator and safety valve to
insure that only low pressure dry nitrogen is intro-
duced into the tubing. Only a small flow is neces-
sary to displace air and prevent oxidation.
In all cases, mount the TXV bulb after vapor line
is brazed and has had sufficient time to cool.
FIGURE 2 : INSULATION OF VAPOR LINE
Liquid
Line
Incorrect
Correct Tape
Sheet Metal Hanger
Insulated Vapor Line

035-16399-001 Rev. B (101)
Unitary Products Group 5
PRECAUTIONS DURING BRAZING OF LINES
The outdoor units have re-usable service valves on both the
liquid and vapor connections. The total system refrigerant
charge is retained within the outdoor unit during shipping and
installation. The re-usable service valves are provided to
evacuate and charge per this instruction.
Serious service problems can be avoided by taking adequate
precautions to assure an internally clean and dry system.
PRECAUTIONS DURING BRAZING ANGLE VALVE
Precautions should be taken to prevent heat damage to angle
valve by wrapping a wet rag around it. Also, protect all
painted surfaces and insulation during brazing. After brazing -
cool joint with wet rag.
Valve can be opened by removing the plunger cap and fully
inserting a hex wrench into the stem and backing out counter
clockwise until valve stem just touches retaining ring.
Replace plunger cap finger tight, then tighten an additional 1/
12 turn (1/2 hex flat). Cap must be replaced to prevent leaks.
Connect the refrigerant lines using the following procedure:
1. Remove the cap and Schrader core from both the liquid
and vapor angle valve service ports at the outdoor unit.
Connect low pressure nitrogen to the liquid line service
port.
2. Braze the liquid line to the liquid valve at the outdoor unit.
Be sure to wrap the valve body with a wet rag. Allow the
nitrogen to continue flowing.
3. Carefully remove the end caps from the evaporator liquid
and vapor connections using a standard tube cutter.
4. Braze the liquid line to the evaporator liquid connection.
The nitrogen should now be flowing through the evapo-
rator coil.
5. Slide the grommet away from the vapor connection at
the coil. Braze the vapor line to the evaporator vapor
connection. After the connection has cooled, slide the
grommet back into original position.
6. Protect the vapor valve with a wet rag and braze the
vapor line connection. The nitrogen flow should be exit-
ing the system from the vapor service port connection.
After this connection has cooled, remove the nitrogen
source from the liquid fitting service port.
7. Evacuate the vapor line, evaporator and the liquid line, to
at least 500 microns.
8. Leak test all refrigerant piping connections including the
service port flare caps to be sure they are leak tight. DO
NOT OVERTIGHTEN (between 40 and 60 inch - lbs.
maximum).
NOTE: Do not use the system refrigerant in the outdoor unit
to purge or leak test.
9. Do not remove the flare caps from the service ports
except when necessary for servicing the system.
10. Release the refrigerant charge into the system. Open
both the liquid and vapor valves by removing the plunger
cap and with an allen wrench back out counter-clockwise
until valve stem just touches retaining ring. Release the
refrigerant charge into the system. See "Precautions
During Brazing Angle Valves" on page 5.
11. If the refrigerant tubing, indoor evaporator coil or outdoor
condensing unit has developed a leak during shipment,
or was, for any other reason, opened to the atmosphere
for more than four (4) minutes, it is necessary to evacu-
ate the system down to at least 500 microns to eliminate
contamination and moisture in the system.
If a leak is suspected, leak test to locate the leak. To verify
the leak, close the valve to the vacuum pump suction to iso-
late the pump and hold the system under vacuum. If the
micron gauge indicates a steady and continuous rise after a
few minutes, it's an indication of a leak. If the gauge shows a
rise, then levels off after a few minutes and remains fairly
constant, its an indication that the system is leak free, but still
contains moisture and may require further evacuation if the
reading is above 1000 microns.
See "System Start Up" section for checking and recording
system charge.
If visual verification of the valve stem reaching
the retaining ring is impossible, stop backing out
the valve stem when the slightest increase in
resistance is felt. Because of the small size and
therefore the reduced resistance, back out the
liquid valve 5 turns maximum to prevent going
past the retaining ring.
This is not a back seating valve. The service
access port has a valve core. Opening or closing
valve does not close service access port.
If the valve stem is backed out past the retaining
ring, the O-ring can be damaged causing leakage
or system pressure could force the valve stem
out of the valve body possibly causing personal
injury. In the event the retaining ring is missing,
do not attempt to open the valve.
The evaporator is pressurized.
Do not connect manifold gauges unless trouble is
suspected. Approximately 3/4 ounce of refriger-
ant will be lost each time a standard manifold
gauge is connected.

035-16399-001 Rev. B (101)
6Unitary Products Group
ELECTRICAL CONNECTIONS
GENERAL INFORMATION & GROUNDING
Check the electrical supply to be sure that it meets the values
specified on the unit nameplate and wiring label.
Power wiring, control (low voltage) wiring, disconnect
switches and over current protection to be supplied by the
installer. Wire size should be sized per NEC requirements
The complete connection diagram and schematic wiring label
is located on the inside surface of the unit electrical box cover
and this instruction.
POWER WIRING
1. Install the proper size weatherproof disconnect switch
outdoors and within sight of the unit.
2. Run power wiring from the disconnect switch to the unit.
3. Remove the control box cover to gain access to the unit
wiring. Route wires from disconnect through power wir-
ing opening provided and into the unit control box as
shown in Figure 3.
4. Install the proper size time-delay fuses or circuit breaker,
and make the power supply connections.
5. Energize the crankcase heater to save time by preheat-
ing the compressor oil while the remaining installation is
completed.
ACCESSORY WIRING
The electrical accessories available for this unit are a two
stage cooling thermostat and an optional De-humidification
Control. Refer to the individual instructions packaged with the
accessories for installation.
THERMOSTAT MOUNTING / WIRING
This condensing unit must be installed with the factory rec-
ommended thermostat, 2ET04700224 or any conventional
two-stage cooling thermostat. The difference between the
two stages of a typical two-stage thermostat is 2 - 2.5 °F.
The thermostat should be located about 5 ft. above the floor,
where it will be exposed to normal room air circulation. Do not
place it on an outside wall or where it is exposed to the radi-
ant effect from exposed glass or appliances, drafts from out-
side doors or supply air grilles.
After the thermostat is mounted, route the 24-volt control wir-
ing (NEC Class 2) from the thermostat to the indoor unit and
outdoor unit. Route the control wiring into the grommeted
hole in the bottom of control box of the outdoor unit. Using
wire nuts connect to leads inside the low voltage box shown
in Figure 3 and wiring diagrams shown in Figures 4 -7.
Interconnecting control wiring must be a minimum of No. 18
AWG color coded insulated wires. If wire lengths increase
more than 90 feet, use No. 16 AWG wires, to prevent exces-
sive voltage drop.
NOTE: To eliminate erratic operation, seal the hole in the
wall at the thermostat with permagum or equivalent
to prevent air drafts affecting the anticipators in the
thermostat.
DE-HUMIDIFICATION CONTROL
A de-humidification control accessory 2HU06700124 may be
required in high humidity areas that apply to varible speed air
handler/furnaces. This control provides cooling at a reduced
air flow, lowering evaporator temperature and increasing
latent capacity. To install, refer to instructions packaged with
the accessory and per Figure 4. Prior to the installation of the
de-humidistat control, the jumper across the de-humidistat
control terminals on the indoor variable speed air handler/fur-
nace terminal board must be removed.
During first or second stage cooling, if the relative humidity in
the space is higher than the desired set point of the de-humi-
distat control, the variable speed blower motor will operate at
a lower speed until the de-humidification control is satisfied.
A 40 - 60% relative humidity level is recommended to achieve
optimum comfort.
NOTE: If a de-humidification control is installed, it is recom-
mended that a minimum air flow of 325 cfm/ton be
supplied at all times.
Never attempt to repair any brazed connections
while the system is under pressure. Personal
injury could result.
All field wiring must USE COPPER CONDUC-
TORS ONLY and be in accordance with Local,
National Fire, Safety & Electrical Codes. This unit
must be grounded with a separate ground wire in
accordance with the above codes.
FIGURE 3 : OUTDOOR UNIT CONTROL BOX
START
RELAY
START
CAPACITOR
RUN
CAPACITOR POWER
WIRING
LOW
VOLTAGE
BOX
COMFORT
ENHANCER
CONTROL
CONTACTOR

035-16399-001 Rev. B (101)
Unitary Products Group 7
FIELD CONNECTIONS - CONTROL WIRING
The recommended field connections for specific indoor air
handlers and furnaces are shown in Figures 4 through 7. All
connects to the outdoor unit are made in the low voltage box
in the bottom right corner of the control box. See Figure 3.
Feed all control wiring through the grommet in the bottom of
the box. Care should be taken so that all wire nut connections
are firm with no exposed wires that could short within the box.
If the fault line (X/L) is not connected to the thermostat, it
should be capped securely inside the box.
Variable Speed Air Handlers and Furnaces - connections
shown in Figure 4. The first stage thermostat signal is con-
nected to Y1 at the air handler/furnace control. It is critical the
Y2 OUT signal is connected to Y at the air handler/furnace
control to properly control the blower speed.
Single Speed Air Handlers and Furnaces - connections
shown in Figures 5 and 6. It is mandatory to connect the
appropriate blower relay to operate the low speeds. The first
stage thermostat signal is connected directly to Y1 on the
outdoor unit. Do not connect to Y at the indoor control. The
first stage blower operation is controlled by the G signal. It is
critical the Y2 OUT signal is connected to Y at the air handler/
furnace control to properly control the blower speed by
switching the relay to the high speed tap.
Two Stage Furnaces - connection shown in Figure 7. The
first stage thermostat signal is connected directly to Y1 on the
outdoor unit. Do not connect to Y at the indoor control. The
first stage blower operation is controlled by the G signal. It is
critical the Y2 OUT signal is connected to Y at the furnace
control to properly control the blower speed.
WIRING DIAGRAMS
FIGURE 4 : WIRING FOR USE WITH VARIABLE SPEED AIR HANDLERS OR FURNACES
OUTDOOR UNIT
CONTACTOR
WIRE NUT
VARIABLE SPEED
FURNACEAND
AIR HANDLER
THERMOSTAT
TYPICAL
TWO STAGE
COOLING
THERMOSTAT
MUST BE USED X,Y1,Y2,HUM
LOCATED ON CFM
SELECTION BOARD
POWER
CONTROL
FACTORY
(CLASS 1WIRING)
(CLASS 2WIRING) POWERWIRING
208/230-1-60
TS
CONTROL
HUMIDISTAT
GND.
LUG
T2 T1
L2 L1
M1
BLK
RED
BRN
YEL
ORG
PUR
C
R
Y2
Y1
X/L
2
C
R
Y2
Y1
G
W1
W2
X/L
O
X
W2
W1
G
Y
Y1
Y2
C
R
1
HUM
1CONNECTFORTHERMOSTATWITHFAULT
LIGHT INDICATOR ONLY,CAPTHISWIRE
IF NOT USED.
2HUMIDISTAT: MAKES CIRCUIT ON HUMIDITY FALL
(JUMPER ON CFM SELECTION
BOARD MUST BE REMOVED)
Y2 OUT

035-16399-001 Rev. B (101)
8Unitary Products Group
FIGURE 5 : WIRING FOR USE WITH N-AH, F*RP/F*FP, F*RC/F*FC MODELS AND 2-SPEED FAN KIT
1CONNECT FORTHERMOSTAT WITH FAULT
LIGHT INDICATOR ONLY,CAPTHISWIRE
IF NOT USED.
DEHUMIDISTAT MAKES CIRCUIT ON
HUMIDITY RISE.
2
OUTDOOR UNIT
WIRE NUT
CONTACTOR
THERMOSTAT
AIR
HANDLER
MOTOR
L1 FAN
2-SPEED
LTRIPECM
2-SPEEDFAN KIT
(2SF06700124)
N-AH F*FC/F*FP
F*RP/F*RC MODELS
TYPICALTWO STAGE
COOLINGTHERMOSTAT
MUST BE USED
DEHUMIDISTAT
(OPTIONAL)
POWER
CONTROL
FACTORY
(CLASS1WIRING)
TS CONTROL
(CLASS 2WIRING) POWERWIRING
208/230-1-60
GND.
LUG
T2 T1
L2 L1
M1
BLK
RED
BRN
YEL
ORG
PUR
C
R
Y2
Y1
R
Y2
Y1
G
W1
W2
X/L W2
W1
G
Y
C
R
1
2Y2 OUT
X/L
C
LOW
HIGH
FIGURE 6 : WIRING FOR USE WITH SINGLE STAGE FURNACE
1CONNECT FORTHERMOSTAT WITH FAULT
LIGHT INDICATOR ONLY,CAPTHISWIRE
IF NOT USED.
2
OUTDOOR UNIT
WIRE NUT CONTACTOR
THERMOSTAT COOLTAP
FURN.
MOTOR
SPDT 24VAC COIL
12 AMP AT 115V RATED MIN.
TYPICALTWO STAGE
COOLINGTHERMOSTAT
MUSTBE USED
DEHUMIDISTAT
(OPTIONAL)
POWER
CONTROL
FACTORY
(CLASS1WIRING)
TSCONTROL
(CLASS 2WIRING) POWERWIRING
208/230-1-60
GND.
LUG
T2 T1
L2 L1
M1
BLK
RED
BRN
YEL
ORG
PUR
C
R
Y2
Y1
R
Y2
Y1
G
W1
W2
X/L
W
G
Y
C
R
1
2Y2 OUT
X/L
C
DEHUMIDISTAT MAKES CIRCUIT ON
HUMIDITY RISE.
HIGH
LOW

035-16399-001 Rev. B (101)
Unitary Products Group 9
FIGURE 7 : WIRING FOR USE WITH 2-STAGE FURNACE
1CONNECT FORTHERMOSTAT WITH FAULT
LIGHT INDICATOR ONLY,CAPTHISWIRE
IF NOT USED.
2
OUTDOOR UNIT
WIRE NUT CONTACTOR
THERMOSTAT
P*DU,P*XU
2-STAGE
FURNACE
TYPICALTWO STAGE
COOLINGTHERMOSTAT
MUST BE USED
DEHUMIDISTAT
(OPTIONAL)
POWER
CONTROL
FACTORY
(CLASS1WIRING)
TSCONTROL
(CLASS 2WIRING) POWERWIRING
208/230-1-60
GND.
LUG
T2 T1
L2 L1
M1
BLK
RED
BRN
YEL
ORG
PUR
R
Y2
Y1
G
W1
W2
X/L
W1
W2
G
Y
C
R
1
2
C
DEHUMIDISTAT MAKES CIRCUIT ON
HUMIDITY RISE.

035-16399-001 Rev. B (101)
10 Unitary Products Group
INDOOR BLOWER SPEED SETTINGS
Refer to the Tabular Data Sheet for the recommended air flow
settings for each size condensing unit.
Variable Speed Air Handlers and Furnaces - Set the high
speed cooling speed per the instructions for the air handler or
furnace by selecting the correct “cool” and “ADJ” taps. The
low speed setting will automatically be programmed for the
correct airflow. Verify the airflow by LED display on the speed
selection board.
Single Speed Air Handlers and Furnaces - It is mandatory
a fan relay kit be applied to the furnace or air handler. The air
handlers are designed to use the 2SF06700124 fan relay and
the furnaces should use a SPDT 24VAC Coil (15 AMP rating
@ 115V). See figures 5 and 6 for wiring connections. The
ideal fan setting is to set the high speed (second stage) air
flow at the fan motor high speed and the low speed (first
stage) airflow at the fan low speed. If the low speed air flow is
too high, unsatisfactory dehumidifaction may occur on first
stage operation. To correct for unsatisfactory dehumidifica-
tion, either add a dehumidistat per figures 5 and 6 or change
the blower motor for better air flow performance.
Two Stage Furnaces - The ideal fan setting is to set the high
speed (second stage) air flow at the fan motor high speed
and the low speed (first stage) airflow at the fan low speed. If
the low speed air flow is too high, unsatisfactory dehumidifac-
tion may occur on first stage operation. To correct for unsatis-
factory dehumidification, either add a dehumidistat per figure
7 or change the blower motor for better air flow performance.
SYSTEM START-UP
ENERGIZE CRANKCASE HEATER
This unit is equipped with a crankcase heater for the com-
pressor.
IMPORTANT - An attempt to start the compressor without
at least 8 hours of crankcase heat will damage the compres-
sor.
In order to energize the crankcase heater, set the indoor ther-
mostat system switch to “OFF”. Close (turn on) the line power
disconnect to the unit.
CHECKING SYSTEM CHARGE
This condensing unit must only be used with the matching
thermostatic expansion valve kit listed in the tabular data
sheet. The best way to check the system charge is by check-
ing the system subcooling during the second stage of opera-
tion.
SERVICING AND VERIFY:
For 2nd stage (2 cylinder) operation, the recommended sub-
cooling is 15°F for all models. For 1st stage (1 cylinder) oper-
ation, the recommended subcooling is 10F for all models.
1. Set the system running in the second stage (2 cylinder
operation) by setting the thermostat at least 6°F below
the room temperature. Short the “TEST” pin to bypass
the 5 minute anti-short cycle timer if necessary. See Fig-
ure 8.
2. Operate the system for a minimum of 15 to 20 minutes.
3. Refer to the tabular data sheet for the recommended air-
flow and verify this indoor air flow (it should be about 400
SCFM per ton).
4. Measure the liquid refrigerant pressure P and tempera-
ture T at the service valve.
5. Calculate the saturated liquid temperature ST from Table
1.
6. Subcooling temperature TC = Saturated Temperature ST
Liquid temp T.
Example: The pressure P and temperature T measured at
the outdoor unit service port is 220 Psig and 95°F. From Table
1 the saturated temperature for 220 Psig is 108. The subcool-
ing temperature TC = 108 - 95 = 13°F.
The recommended subcooling level should be about 15+/
3°F for all models. Add charge if the calculated subcooling
temperature TC in step 6 is lower than the recommended
level. Remove and recover the refrigerant if the subcooling
Temperature TS is higher than the recommended level.
It is unlawful to knowingly vent, release or dis-
charge refrigerant into open air. It is necessary to
recover the refrigerant during any repair or instal-
lation of the system.
Refrigerant charging should only be carried out
by a qualified air conditioning contractor.
Table 1: R-22 SATURATION TEMPERATURE
ST1
P2
1. ST = Saturated Temperature
2. P = Pressure
90
168 91 171 92 174 93 176 94 179
ST
P95 182 96 185 97 187 98 190 99 193
ST
P100 196 101 199 102 202 103 205 104 208
ST
P105 211 106 214 107 217 108 220 109 223
ST
P110 226 111 229 112 233 113 236 114 239
ST
P115 243 116 246 117 250 118 253 119 256
ST
P120 260 121 263 122 267 123 271 124 274
ST
P125 278 126 282 127 285 128 289 129 293
ST
P130 297 131 301 132 305 133 309 134 313

035-16399-001 Rev. B (101)
Unitary Products Group 11
RECORDING TOTAL SYSTEM CHARGE
The factory charge in the outdoor unit is listed on tabular data
sheet and includes enough charge for the unit, matched
evaporator and 15 feet of lines. Installations over 15 feet long
and some indoor coil matches may require some additional
charge.
The “TOTAL SYSTEM CHARGE” must be permanently
stamped on the unit data plate.
Refer to the tabular data sheet and determine the system
charges as follows:
1. Determine the condensing unit charge.
2. Determine indoor coil adjustment charge.
3. Calculate the additional charge for line lengths greater
than 15 feet using refrigerant line adder (oz./ft.).
4. Total system charge = Item 1 + Item 2 + Item 3.
5. Permanently stamp the unit data plate with the total
amount of refrigerant in the system.
SYSTEM FUNCTIONS
This condensing unit with a TSä compressor is designed to
provide maximum efficiency and comfort to the user. This unit
has a control with many unique features that are described
below.
FIRST AND SECOND STAGE COMPRESSOR
MODES
The TSä compressor is a single two cylinder-reciprocating
compressor. The first stage mode operates only one cylinder
producing a part load capacity and high operating efficien-
cies. The system is sized so that over 80% of the cooling
requirements are met by this mode. The operating time for
first stage will be slightly longer than with a single speed com-
pressor system. The high efficient operation offsets the
longer run time for a total energy reduction. The second
stage mode operates both cylinders for full capacity to meet
peak cooling demands.
To operate one cylinder, the compressor motor runs in the
reverse direction of the two cylinder (full capacity) mode. This
is accomplished by reversing the motor run and start wind-
ings through the control circuitry.
All units come factory equipped with Hard Start components
sized and optimized for one and two cylinder operation. Since
all installations must be with a TXV valve and the switching
time from first to second stage is 5 seconds, hard start com-
ponents are mandatory. The Hard Start components are
wired across the compressor run capacitor and not the com-
pressor start windings.
DEHUMIDIFICATION
The product is designed to run longer on first stage than a
regular single speed compressor system. This additional run
time provides for better dehumidification and consistent room
temperatures. However, there may be installation environ-
ments that the humidity levels are unacceptable. In this case
the addition of a humidity control will resolve these issues.
A humidistat installed with a variable speed air handler or fur-
nace reduces the airflow of the blower by 15% of the pro-
grammed speed during the dehumidification mode. This
lower airflow reduces the evaporator temperature increasing
the latent capacity. The humidistat for these variable speed
systems opens the humidistat contacts on humidity rise. They
are wired to the control system per figure 4.
A dehumidistat installed with a single speed or 2-speed air
handler or furnace will force the system into second stage
mode to increase the latent capacity. It is critical that the low
speed blower operation is set as low to the recommended air-
flow to limit the number of times the unit will run second stage
only for dehumidification purposes. The dehumidistats for
these systems close the dehumidistat contacts on humidity
rise. They are wired to the control system per Figures 5
through 7.
COOLING OPERATION
The condensing unit requires a two stage cooling indoor
room thermostat to operate correctly. The outdoor unit control
has a fault signal output (X/L) that can light a fault light on a
thermostat if that feature is available with the thermostat
used.
With a call for first stage cooling (Y1), the outdoor fan and the
first stage of the compressor are energized following the
completion of a five-minute anti-short cycle timer. Simulta-
neously, the indoor blower is energized (see indoor blower
operation section).
With a call for second stage cooling (Y2), while the unit is
operating in the first stage mode, the contactor opens de-
energizing the outdoor fan and the compressor. The control
will switch the control circuit and five seconds later will ener-
gize the contactor starting the outdoor fan and the compres-
sor in the second stage mode. Additionally, the control
outputs a 24v signal (at Y2 OUT) to control the indoor blower
at the correct CFM.
If there is a call for second stage cooling (Y2) prior to the unit
operating the first stage (i.e. if call occurs during the five
minute anti-short cycle period), then the control will switch the
control circuit and will energize the contactor starting the out-
door fan and the compressor in the second stage mode.
Additionally, the control outputs a 24v signal (at Y2 OUT) to
control the indoor blower at the correct CFM.
When the second stage of the room thermostat is satisfied
only, the unit will continue to operate in the second stage
mode.
When the first stage of the room thermostat is satisfied, the
control will de-energize the contactor stopping the outdoor
fan and the compressor.
If the room thermostat calls for second stage cooling (Y2) on
two consecutive cooling cycles, the next call for cooling for
either first (Y1) or second (Y2) stage will energize the unit in
the second stage mode. The above mode will be reset to per-
mit start up on first stage with only a Y1 call when the second
stage operational cycle runs less than 15 minutes. This mode
can also be reset when servicing the equipment by removing
24 V to the control.

Subject to change without notice. Printed in U.S.A. 035-16399-001 Rev. B (101)
Copyright © by York International Corp. 2001. All rights reserved. Supersedes: 035-16399-001 Rev. A (101)
Unitary 5005 Norman
Products York OK
Group Drive 73069
NOTE: ThecontrolwithnotoperateonY2withoutaY1signal.
SYSTEM CONTROL BOARD FUNCTIONS
Refer to Figure 8 for view of Control Board.
Five Minute Anti-Short Cycle Timer
The control has a five minute time delay to prevent the sys-
tem from short cycling after a thermostat off cycle or power
interrupt. This five-minute delay is initiated following the com-
pletion of a first stage cooling call (Y1) or the 24v power up of
the control. During this mode the control will not respond to
any thermostat inputs and the LED will flash a code 1 at the
control board.
For servicing or during installation of the condensing unit, the
time delay may be by-passed by momentarily jumping the
two test pins when there is a call for cooling (Y1 or Y2).
Indoor Blower Operation
The indoor blower operation is controlled directly by the Y1 or
G thermostat signal for the first stage of cooling and by
Y2OUT from the control for the second stage of cooling. This
is done to allow the outdoor unit control to override the ther-
mostat control so that the indoor blower continues to operate
on high speed even though the call for Y2 is not present.
Additionally, during the five second switching from first to sec-
ond stage, the blower ramp up is delayed.
HeartBeat – LED flash rate of .5 sec. ON and .5 sec. OFF
Flash/Error Code – LED flash rate of .3 sec. ON and .3
sec. OFF for the number of codes and with a pause of 1.5
seconds between flash codes.
Resetting Fault Conditions
The control locks out the unit and does not permit it to run
when it detects certain fault conditions. Table 2 lists all the
modes indicated by the control. Control code "1" is a tempo-
rary five-minute lock-out (see Anti-short cycle above).
INSTRUCTING THE OWNER
Assist owner with processing warranty cards. Review Owners
Guide and provide a copy for the owner guidance on proper
operation and maintenance. Instruct the owner or the opera-
tor how to start, stop and adjust temperature setting.
The installer should also instruct the owner on proper opera-
tion and maintenance of all other system components.
INDICATIONS OF PROPER OPERATION
Cooling operation is the same as any conventional air condi-
tioning unit.
The following checks may be made to determine if the sys-
tem is operating properly:
1. The outdoor fan should be running, with warm air being
discharged from the top of the unit.
2. The indoor blower (furnace or air handler) will be operat-
ing, discharging cool air from the ducts.
3. The vapor line at the outdoor unit will feel cool to the
touch.
4. The liquid line at the outdoor unit will feel warm to the
touch.
If unit is not operating properly, check the following items
before calling a serviceman:
1. Indoor section for dirty filter.
2. Outdoor section for leaf or debris blockage.
Eliminate problem, turn off the thermostat for 10 seconds and
attempt start. Wait 5 minutes. If system does not start, call
service technician.
MAINTENANCE
1. Dirt should not be allowed to accumulate on the outdoor
coils or other parts in the air circuit. Clean as often as
necessary to keep the unit clean. Use a brush, vacuum
cleaner attachment, or other suitable means.
2. The outdoor fan motor is permanently lubricated and
does not require periodic oiling.
3. If the coil needs to be cleaned, it should be washed with
Calgon CalClean (mix one part CalClean to seven parts
water). Allow solution to remain on coil for 30 minutes
before rinsing with clean water. Solution should not be
permitted to come in contact with painted surfaces.
4. Refer to the furnace or air handler instructions for filter
and blower motor maintenance.
5. The evaporator coil drain pan should be inspected and
cleaned regularly to prevent odors and assure proper
drainage.
When the system is functioning properly and the owner
has been fully instructed, secure the owner’s approval.
FIGURE 8 : COMFORT ENHANCERTM CONTROL
BOARD
LED @
control Description 24V @ X/L line
HeartBeat Normal Operation None
1 Flash Compressor waiting to complete
Anti-short cycle period None
On Steady Control Failure Yes
Off No power or Control Failure Yes
STATUS EXTERNAL RLY
TEST
TEST
PINS
R
C
L
Y2
Y2 OUT
Y1
PS
M
LED
TS CONTROL